JPS5812670Y2 - coffee boiler - Google Patents

Description

[Detailed description of the invention] This invention relates to a so-called drip-type coffee brewer.
In particular, the purpose is to improve the extraction characteristics of coffee.

Generally, the coffee basket in this type of drip coffee brewer is formed into a substantially conical shape, and has a plurality of ribs on its inner surface that guide the coffee that has passed through the paper filter to the bottom, and a coffee outlet on the bottom. The filter body,
The surrounding support frame was integrally molded from synthetic resin or the like.

In addition, the mechanism of the water boiler is to introduce water stored in a water tank into a pipe equipped with a heating device, heat the pipe, generate air bubbles in the pipe, and use these air bubbles to push out hot water. Coffee was extracted by dripping hot water from above the coffee basket.

In this conventional coffee boiler, coffee powder corresponding to the desired number of cups is stored in the filter body through a paper filter, but since this filter body is approximately conical, especially
When extracting multiple cups of coffee (about 12 cups), the surface area of the entire coffee powder becomes large, and it is not possible to extract coffee properly from the entire coffee powder by simply dropping hot water into the center.

In order to solve this problem, various methods have been devised to drip hot water over the entire coffee grounds, but in any of these methods, in order to drip hot water almost evenly over the entire coffee grounds, the upper surface of the entire coffee grounds inside the filter body is is almost flat, with a thick layer of coffee powder in the center and a thin layer of coffee powder around the periphery, which has the disadvantage that the coffee cannot be extracted evenly and the coffee is weak and tastes bad. Ta.

As a countermeasure, even if you increase the amount of coffee powder per cup or make the coffee powder finer, the concentration will not be very high and the taste will be bad. had become a big problem.

The present invention solves the above-mentioned drawbacks of the conventional coffee brewer, and embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 is a water tank, which has a lid 2 at its upper opening and a check valve 3 at its bottom.

4 is a heating pipe, one end of which is connected to the water tank 1 through a check valve 3, and the other end connected to a discharge vibro through a water rising pipe 5.

This discharge vibro has an upward opening 6a opened above the coffee basket 7 and a downward opening 6b.

A concave water sprinkling lid 8 is provided opposite the upward opening 6a of the discharge vibro.

Note that 9 is a cylindrical discharge port decoration.

The coffee basket 7 is composed of a substantially inverted conical filter part 7a in the center and a support frame 7b around the outer periphery of the filter part 7a, and is integrally molded from synthetic resin or the like.

Coffee powder 1 is introduced into the filtration section 7a through a paper filter 10.
1 is stored.

12 is a lid placed on the coffee basket 7, and has a shape as shown in FIG.

That is, the central part has a through hole 13, and this through hole 1
The ring-shaped rib 14 forming the rib 14 has a mountain shape, and has a plurality of elongated holes 15 on the outer periphery of the lower end of the outer inclined surface 14a of the rib 14. It has a sloped surface 16.

A protrusion 17 is provided on the periphery of the back surface of the lid 12.
2 is placed on the coffee basket 7, this protrusion 17
engages the upper edge of the coffee basket 7.

Reference numeral 18 denotes a heating body having a heating pipe 4 therein, and is equipped with a heating element 19 in a thermally sensitive manner.

Reference numeral 20 denotes a container in which the coffee basket 7 is placed, which is placed on the heating element 18 via a heat insulating plate 21, receives the coffee dripping from the coffee basket 7, and is placed on the heating element 18 through a heat insulating plate 21.
8, it is heated and kept at an appropriate temperature.

Next, coffee extraction in the above configuration will be explained.

Water in the water tank 1 passes through the check valve 3 and flows into the heating pipe 4.

The check valve 3 only allows water from the water tank 1 to pass through the heating pipe 4.

Therefore, the water in the heating pipe 4 heated by the heating element 19 via the heating element 18 repeatedly boils and expands, passes through the water raising pipe 5 and the discharge vibro, and is discharged from the upward opening 6a and the downward opening 6b.

The hot water discharged from the downward opening 6b passes through the through hole 13 in the center of the lid 12 and directly collides with the coffee grounds 11, making the entire center of the coffee grounds 11 concave as shown in FIG.

Further, the hot water discharged from the upward opening 6a hits the sprinkler lid 8 and drips onto the lid 12.

The hot water dripped onto this lid 12 is directed by the inclined surfaces 14a and 16.
It is dispersed and dripped onto the periphery of the coffee powder 11.

As a result, the thickness of the layer of the coffee powder 11 up to the paper filter 10 becomes uniform throughout, and hot water is evenly passed through the entire coffee powder 11 to extract coffee components.

Therefore, it is possible to extract coffee evenly even when extracting multiple cups of coffee for about 8 to 12 cups.

Furthermore, the opening area of the lid 12 can be minimized, the original role of the lid can be fully demonstrated, the coffee extraction temperature can be maintained at a high temperature, and the extraction conditions can be further improved.

Regarding the openings provided in the discharge vibro, as shown in FIG. 4, even if downward openings 6b are formed at two locations, a large amount of hot water is dripped into the center of the coffee powder 11, as in the previous embodiment. A similar effect can be obtained.

As is clear from the above description, according to the present invention, a large amount of hot water is dripped into the center of the coffee grounds in the coffee basket to form a concave portion, thereby making the layer of coffee grounds uniform and evenly distributed throughout the coffee basket. Since hot water is dripped into the cup, even when brewing multiple cups of coffee, uniform coffee is extracted from both the center and the periphery of the coffee grounds, resulting in highly concentrated and delicious coffee.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a coffee boiler showing an embodiment of the present invention, Fig. 2 is a perspective view of the lid of the coffee boiler, and Fig. 3 is a cross-sectional view of essential parts of the coffee boiler. , FIG. 4 is a sectional view of a main part of a coffee brewer showing another embodiment of the present invention. 1...Water tank, 3...Check valve, 4.
... Heating pipe, 5 ... Water rising pipe, 6
...Discharge pipe, 6a...Upward opening, 6b...Downward opening, 7...Coffee basket, 12...Lid, 13.・・・・・・
Through hole, 14...Ring-shaped rib, 14a...
... Slanted surface, 15 ... Long hole, 16 ...
... Inclined surface, 18 ... Heating body, 19 ...
・Heating element.

Claims (1)

[Scope of utility model registration request] A water rising pipe having one end connected to a water tank via a check valve and the other end opening above the coffee basket, and a heating device disposed in the middle of this water rising pipe, the opening of the water rising pipe being The coffee basket is provided with a water sprinkling lid facing both upward and downward, and has a concave inner surface on the upper side corresponding to the upward opening, and the coffee basket has a through hole in the center thereof, and the outer circumferential surface of the ring-shaped rib forming the through hole. A coffee boiler comprising an outwardly sloping surface, a plurality of holes provided on the outer periphery of the lower end of the sloping surface, and a lid having an inwardly sloping surface placed on the outer periphery of the holes.